30139213 has 8 divisors (see below), whose sum is σ = 32943008. Its totient is φ = 27404784.

The previous prime is 30139199. The next prime is 30139229. The reversal of 30139213 is 31293103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30139213 - 2⁹ = 30138701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30139013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16431 + ... + 18172.

It is an arithmetic number, because the mean of its divisors is an integer number (4117876).

Almost surely, 2^30139213 is an apocalyptic number.

It is an amenable number.

30139213 is a deficient number, since it is larger than the sum of its proper divisors (2803795).

30139213 is a wasteful number, since it uses less digits than its factorization.

30139213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34683.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 30139213 is about 5489.9192161634. The cubic root of 30139213 is about 311.2031392385.

The spelling of 30139213 in words is "thirty million, one hundred thirty-nine thousand, two hundred thirteen".